an electrical device that provides a path for electrical current to flow
"The technician replaced the faulty circuit after it stopped delivering power to the entire kitchen outlet strip."
an established itinerary of venues or events that a particular group of people travel to
"she's a familiar name on the club circuit"
"on the lecture circuit"
"the judge makes a circuit of the courts in his district"
"the international tennis circuit"
the boundary line encompassing an area or object
"he had walked the full circumference of his land"
"a danger to all races over the whole circumference of the globe"
(law) a judicial division of a state or the United States (so-called because originally judges traveled and held court in different locations); one of the twelve groups of states in the United States that is covered by a particular circuit court of appeals
"The lawyer argued before the federal judge sitting on the Ninth Circuit to appeal his conviction."
a racetrack for automobile races
"The crowd cheered loudly as the race car sped around the final lap of the circuit."
The act of moving or revolving around, or as in a circle or orbit; a revolution
"The plane made a tight circuit around the mountain before descending to land."
In plain English: A circuit is a complete path that electricity follows to get from one place back to the same starting point.
"The electrician checked the circuit to see why the lights would not turn on."
Usage: Use "circuit" to describe a continuous path that returns to its starting point, such as running around a track once or an electrical loop. Do not use it to mean a single trip or movement in one direction, which should instead be described as a journey or rotation.
To move in a circle; to go round; to circulate.
"The drone hovered low and moved in a slow circuit around the cliff edge before returning to its landing pad."
In plain English: To circuit means to move around an area quickly and repeatedly, often in a playful or chaotic way.
"The broken wire caused the power to circuit through the house and trip the fuse box."
Usage: As a verb, circuit means to travel around something or through an area repeatedly, often without stopping. Use it when describing a journey that loops back on itself, such as driving the perimeter of a city block.
The word comes from the Latin circuitus, meaning "a going round." It is formed from the words for "around" and "to go."